Architect in
Cologny

AETC Sàrl

Since 2008 · 21–50 empl.·5.0(3)

The core activity of AETC is architecture and urban planning, including the areas of: territorial strategy, local project development and planning, construction and renovation, competitions and tenders, as well as citizen participation and communication. The company thus provides services in the fields of architecture, urban planning, project development and management.

EMA Eric Maria Architectes Associés SA

Since 2001 · 11–20 empl.

The company's core activity is the planning and realization of architectural projects, including the design of buildings, museums, apartments, office buildings, hotels, shopping centers and other real estate. The company also offers services in the field of urbanism and design, including the planning of cities, public spaces and furniture.

Ai4 Architecture & Investissements Sàrl

Since 2012 · 1–10 empl.

The company's core activity is the planning and design of architecture and interior spaces.

Fractal Architecture Sàrl

Since 2021 · 1–10 empl.

Fractal Architecture Sàrl is an architecture practice working on architectural projects. Its portfolio includes residential buildings, conversions and renovations, as well as public buildings.

GIRANI & PERRILLAT Direction des Travaux-Architectes Sàrl

Since 2017 · 11–20 empl.·5.0(4)

GIRANI & PERRILLAT Direction des Travaux-Architectes Sàrl is an architecture practice providing architectural services and construction management. It coordinates building projects, advises and supports clients, assesses construction costs, and works on renovations, conversions and energy improvements.

MAG architectes Sàrl

Since 2021 · 1–10 empl.·5.0(5)

MAG architectes Sàrl is an architecture practice that plans and oversees residential, commercial and public building projects. Its services include feasibility studies, building surveys, 3D visualisations, building permit applications, construction management, property assessments and support for clients throughout project phases.

Artca Studio Sàrl

Since 2023 · 1–10 empl.

Artca Studio Sàrl provides services to real estate companies and architectural firms in architecture and 3D visualization. Its work includes photorealistic renderings, technical construction drawings, project visualizations, animations, and interactive 360° tours.

ai4 studio SA

Since 2025 · 1–10 empl.

ai4 studio SA is an architecture and interior design studio that plans, creates and renovates spaces, and develops bespoke interior design solutions.

ai4 terra SA

Since 2025 · 1–10 empl.

ai4 terra SA is an architecture studio working in planning, design, renovation and bespoke interior design. Its projects include housing, public buildings and workspaces.

Katja Mischler-Frapolli architecte EPFZ-SIA

Since 2010 · 1–10 empl.

Katja Mischler-Frapolli architecte EPFZ-SIA is an architecture practice working on new buildings, renovations, and interior and exterior design. Its activities also include feasibility and urban planning studies, architecture competitions, and the supervision of building projects.

ecotonos Sàrl

Since 2021 · 1–10 empl.

ecotonos Sàrl is an architecture practice working in architecture, renovation, building remediation and the enhancement of existing buildings. It develops sustainable projects using local, bio-based and reused materials, and supports them from building assessment through implementation.

Rémy Vauthier

Since 1985 · 1–10 empl.